Ninth Layer: Magnetic wave-proof, high-quality silicone glass fiber heating wire. The heat system of the mat uses standard heating material. After heating, the temperature can rapidly rise, and this heating material is not easy aging, and it also resists high temperatures and folding.

Tenth layer: Bimetal, overheat protect (80 degrees Celsius)

Eleventh layer: Sensor, test the recent temperature, the most important part in microcomputer controllers. The sensor reports the recent temperature to the controller screen, so the controller can adjust the temperature according to users setting.